Previously, Apple has tapped both Samsung and TSMC to build its SoCs, but stuck with the same Qualcomm modem for all its hardware.With the iPhone 7, Apple adopted an Intel modem for its AT&T and T-Mobile variants, while the factory-unlocked devices, Sprint, and Verizon hardware all use Qualcommâ€™s modem silicon (MDM9645M if you want to get technical).